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US4269673A Expired / Lapsed US ⏱️ 0.0 years remaining

Anode mount

Assignee: Alcoa Corp
•
Filing: 1980-01-28
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Granted: 1981-05-26
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Expires: 2000-01-28
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Abstract

Abstract The invention involves a cell which may be used for producing molten aluminum by electrolysis of aluminum oxide in a molten bath. The cell includes a cathode and an anode, a bar and a hanger. The bar is connected at an upper end to the hanger and at a lower end to the anode. Flexible means is provided for supplying electrical current through the bar to the anode. A jack means raises and lowers the hanger and thus the anode. Included in the invention, the hanger is mounted at at least two separated points, one higher than the other, in encompassing, sliding relationship, on a single, upright, circular cross-sectioned post passing through the hanger. By this technique, the hanger is constrained to move up and down, without relation about horizontal axes. The invention additionally involves a clamp including means for providing a backing against which articles to be clamped can be placed, gate means mounted for pivoting about an axis into and out of confrontation with the backing means, the pivot axis passing through the gate means, and means for forcing the gate means toward the backing means at least when the gate means is in confrontation with the backing means. Included in the invention, at least the portion of the gate means at said axis moves toward the backing means during operation of the forcing means in forcing the gate means toward the backing means. Also provided is a tool capable of operating such a clamp. The tool includes a means for operating the forcing means and a means for pivoting the gate means.

Inventors

  • 👤 John F. Clark

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 09:11
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/10; C25C3/16

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 126 words
In a cell which may be used for producing molten aluminum by electrolysis of aluminum oxide in a molten bath, which cell includes a cathode and an anode, a bar and a hanger, the bar being connected at an upper end to the hanger and at a lower end to the anode, flexible means for supplying electrical current through the bar to the anode, and jack means for raising and lowering the hanger and thus the anode, the improvement comprising that the hanger is mounted at at least two separated points, one higher than the other, in encompassing, sliding relationship, on a single, upright, circular cross-sectioned post passing through the hanger, whereby the hanger is constrained to move up and down without rotation about horizontal axes.
Claim 2
Dependent Claim 126 words
In a cell which may be used for producing molten aluminum by electrolysis of aluminum oxide in a molten bath, which cell includes a cathode and an anode, a bar and a hanger, the bar being connected at an upper end to the hanger and at a lower end to the anode, flexible means for supplying electrical current through the bar to the anode, and jack means for raising and lowering the hanger and thus the anode, the improvement comprising that the hanger is mounted at at least two separated points, one higher than the other, in encompassing, sliding relationship, on a single, upright, circular cross-sectioned post passing through the hanger, whereby the hanger is constrained to move up and down without rotation about horizontal axes.
Claim 3
Dependent Claim 24 words
A cell as claimed in claim 1 wherein the jack means acts on the vertical line through the center of gravity of the anode.
Claim 4
Dependent Claim 28 words
A cell as claimed in claim 2 wherein two anodes and bars are connected to the hanger, and the jack means acts one-half way between the two anodes.
Claim 5
Dependent Claim 138 words
In an operating method for a cell which may be used for producing molten aluminum by electrolysis of aluminum oxide in a molten bath, which cell includes a cathode and an anode, a bar and a hanger, the bar being connected at an upper end to the hanger and at a lower end to the anode, flexible means for supplying electrical current through the bar to the anode, and jack means for raising and lowering the hanger and thus the anode, the improvement comprising guiding the raise and lower movement of the hanger by mounting the hanger at at least two separated points, one higher than the other, in encompassing, sliding relationship, on a single, upright, circular cross-sectioned post passing through the hanger, whereby the hanger is constrained to move up and down without rotation about horizontal axes.
Claim 6
Dependent Claim 138 words
In an operating method for a cell which may be used for producing molten aluminum by electrolysis of aluminum oxide in a molten bath, which cell includes a cathode and an anode, a bar and a hanger, the bar being connected at an upper end to the hanger and at a lower end to the anode, flexible means for supplying electrical current through the bar to the anode, and jack means for raising and lowering the hanger and thus the anode, the improvement comprising guiding the raise and lower movement of the hanger by mounting the hanger at at least two separated points, one higher than the other, in encompassing, sliding relationship, on a single, upright, circular cross-sectioned post passing through the hanger, whereby the hanger is constrained to move up and down without rotation about horizontal axes.

References Cited (Backward Citations)

US2734412A Cited
US2061146A Cited
US3080310A Cited
FR1328361A Cited
US3393264A Cited
US3434955A Cited
US3404081A Cited
US3692658A Cited
US3637481A Cited
SU658185A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-25 1984-11-24 1985-05-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-25 1988-11-24 1989-05-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-25 1992-11-24 1993-05-26 $7700.00 Window Closed / Lapsed

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